MySQL双主架构
- MySQL双主架构
-
- 配置MySQL-0001
-
- 安装MySQL
- 配置开启bin-log
- 配置本机唯一标识
- 启动服务
- 查看初始密码
- 修改密码
- 授权复制用户
- 查看bin-log信息
- 配置MySQL-0002
-
- 安装MySQL
- 配置开启bin-log
- 配置本机唯一标识
- 启动服务
- 查看初始密码
- 修改密码
- 授权复制用户
- 查看bin-log信息
- 指定主服务器（主服务器为MySQL-0001）
- 开启slave进程
- 查看状态
- 继续配置MySQL-0001
-
- 指定主服务器（主服务器为MySQL-0002）
- 开启slave进程
- 查看状态
- 验证主从状态
-
- MySQL-0001建库建表插入数据
- MySQL-0002查看验证
- MySQL-0002建库建表插入数据
- MySQL-0001查看验证
MySQL双主架构
| ip地址 |
主机名 |
安装服务 |
角色 |
| 192.168.0.22 |
MySQL-0001 |
mysql-5.7.39-1.el7.x86_64.rpm-bundle.tar |
主服务器,从服务器 |
| 192.168.0.23 |
MySQL-0002 |
mysql-5.7.39-1.el7.x86_64.rpm-bundle.tar |
主服务器,从服务器 |
配置MySQL-0001
安装MySQL
[root@mysql-0001 ~]
[root@mysql-0001 ~]
配置开启bin-log
配置本机唯一标识
vim /etc/my.cnf
server_id=0001
log_bin=mysql-0001
启动服务
[root@mysql-0001 ~]
查看初始密码
[root@mysql-0001 ~]
2022-11-10T09:40:49.500176Z 1 [Note] A temporary password is generated for root@localhost: ;%oAoQYYh3%t
修改密码
[root@mysql-0001 ~]
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.39-log
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> alter user root@localhost identified by 'zzz-123-ZZZ';
Query OK, 0 rows affected (0.00 sec)
授权复制用户
mysql> grant replication slave on *.* to repluser@"%" identified by "zzz-123-ZZZ";
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> select user from mysql.user;
+---------------+
| user |
+---------------+
| repluser |
| mysql.session |
| mysql.sys |
| root |
+---------------+
4 rows in set (0.00 sec)
查看bin-log信息
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| mysql-0001.000002 | 685 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> exit
Bye
配置MySQL-0002
安装MySQL
[root@mysql-0002 ~]
[root@mysql-0002 ~]
配置开启bin-log
配置本机唯一标识
vim /etc/my.cnf
server_id=0002
log_bin=mysql-0002
启动服务
[root@mysql-0002 ~]
查看初始密码
[root@mysql-0002 ~]
2022-11-10T09:46:54.003213Z 1 [Note] A temporary password is generated for root@localhost: se2oaiANhe-!
修改密码
[root@mysql-0002 ~]
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.39-log
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> alter user root@localhost identified by 'zzz-123-ZZZ';
Query OK, 0 rows affected (0.00 sec)
授权复制用户
mysql> grant replication slave on *.* to repluser@"%" identified by "zzz-123-ZZZ";
Query OK, 0 rows affected, 1 warning (0.00 sec)
查看bin-log信息
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| mysql-0002.000002 | 685 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
指定主服务器（主服务器为MySQL-0001）
mysql> change master to master_host="192.168.0.21",master_user="repluser",master_password="zzz-123-ZZZ",master_log_file="mysql-0001.000002",master_log_pos=685;
Query OK, 0 rows affected, 2 warnings (0.03 sec)
开启slave进程
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
查看状态
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.21
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-0001.000002
Read_Master_Log_Pos: 685
Relay_Log_File: mysql-0002-relay-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: mysql-0001.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 685
Relay_Log_Space: 533
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: c2343fd8-60db-11ed-a268-fa163ee0384d
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
mysql> exit
Bye
继续配置MySQL-0001
指定主服务器（主服务器为MySQL-0002）
[root@mysql-0001 ~]
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.39-log MySQL Community Server (GPL)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> change master to master_host="192.168.0.22",master_user="repluser",master_password="zzz-123-ZZZ",master_log_file="mysql-0002.000002",master_log_pos=685;
Query OK, 0 rows affected, 2 warnings (0.02 sec)
开启slave进程
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
查看状态
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.22
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-0002.000002
Read_Master_Log_Pos: 685
Relay_Log_File: mysql-0001-relay-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: mysql-0002.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 685
Relay_Log_Space: 533
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 2
Master_UUID: 9b87b112-60dc-11ed-a950-fa163ee0384e
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
验证主从状态
MySQL-0001建库建表插入数据
mysql> create database mysql0001DB;
Query OK, 1 row affected (0.00 sec)
mysql> create table mysql0001DB.m1 (id int,num int);
Query OK, 0 rows affected (0.02 sec)
mysql> insert into mysql0001DB.m1 values(11,22),(33,44);
Query OK, 2 rows affected (0.02 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> select * from mysql0001DB.m1;
+------+------+
| id | num |
+------+------+
| 11 | 22 |
| 33 | 44 |
+------+------+
2 rows in set (0.00 sec)
mysql> exit
Bye
MySQL-0002查看验证
[root@mysql-0002 ~]# mysql -uroot -p'zzz-123-ZZZ'
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.39-log MySQL Community Server (GPL)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select * from mysql0001DB.m1;
+------+------+
| id | num |
+------+------+
| 11 | 22 |
| 33 | 44 |
+------+------+
2 rows in set (0.00 sec)
MySQL-0002建库建表插入数据
mysql> create database mysql0002DB;
Query OK, 1 row affected (0.01 sec)
mysql> create table mysql0002DB.m2 (id int,top int);
Query OK, 0 rows affected (0.03 sec)
mysql> insert into mysql0002DB.m2 values(100,200),(200,300);
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> select * from mysql0002DB.m2;
+------+------+
| id | top |
+------+------+
| 100 | 200 |
| 200 | 300 |
+------+------+
2 rows in set (0.00 sec)
mysql> exit
Bye
MySQL-0001查看验证
[root@mysql-0001 ~]# mysql -uroot -p'zzz-123-ZZZ'
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.7.39-log MySQL Community Server (GPL)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select * from mysql0002DB.m2;
+------+------+
| id | top |
+------+------+
| 100 | 200 |
| 200 | 300 |
+------+------+
2 rows in set (0.00 sec)
